Detachable shelf and heat-regulator for ovens



(No Model.)

- O. F.- FROST.

DETACHABLE SHELF AND HEAT REGULATOR FOB OVENS.

No. 381,229. PatentedAprL17.1888

INVEN-TOR: O 7% WITNESSES:

ATTORNEYS.

N. PEIERS. PhowLhMgnphen Wahlnglun, D; Q

UNITED STATES.

PATENT Omen.

OSCAR n. FROST, on MONMOUTH MAINE, ASSIGNOB 0F ONE-HALF To I AUGUSTUS A. FILLEBROWN, or AYEB, MAssAoHUsErTs.

DETACHABLE SHELF-ANDHEATmEeuLAToa FOR ovens;

SPECIFICATION forming part of Letters Pate nt No. 381,229. da ted ApriFlV, 1 888, f

Application filed June 8, 1887. Serial No. 240,636. (No model.)

To all whom it may concern} I Be it known that I, OSCAR F.-FROST, of Mom mouth, in the county of Kennebec and State of Maine, have invented a new and Improved and heat-regulator for ovens, and has for its object to. provide a means whereby the heat may be regulated atwill in an oven, although a fierce fire may be made in the stove to boil or fry upon its surface, and wherein the device, when notin use as a regulator,-may be employed as a shelf or support for pans.

The inventionconsists in the construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Referenceis to be hadto the'accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

-Figu're 1 is an edge view of the device in position in an oven. Fig. 2 isa plan view of thesame. Fig.3isatransversesectionthrough line as a: of Fig. 2.

In carrying out the invention the sides A of the shelf are constructed of angle-iron or any light metal'bent in that shape vwit-h the flangin'g portion a at the bottom, and the ends A are composed? preferably, of straight strips of metal, wherebya rectangular frame, B, is formed, as'shown in Fig. 2. V

Centrally the frame a transverse strip, B,

, is attached tothe end pieces. Into each side of said strip' and in the sides "A the trunnions d of a series of shutters, D, are journaled,

' each of said shutters being provided-upon one side at or near one longitudinal edge, both sides of the center, with counterpoise-weights d, whereby the said shutters are normally kept in a vertical position.

When the shutters are carriedto ahori zontal position, they are so spaced that the longitudinal edge of one will overlap the opposing edge of the other. In order to conveniently bring thenshutters to a hprizontal position centrally beneath each section, a rod, E, is extended adapted to slide in slots 6, cutin the end pieces, as shown in Figs. 1 and 3. In the upper side of the said sliding bars a series of recesses,-e, are cut, one recess corresponding with each shutter, one Wall,e of the recesses being madedecidedly concave and the 5 'stantially vertical or open position, as shown 6 in Fig; 3.

In application the flanges a are made to I rest upon the usual lugs, h, common' to all ovens H, as shown in Fig. 1, above the floor, f p

and. the article to be baked is placed beneath 7o the .shelf. If the heat upon top is 'too severe, theshutters are closed or partially closed, as'desired, and if the oven is too hasty at the bottom-the pan may be placed upon the shelf.

\ Having thus described my invention, whatI 7 5 claim as new, and desire to secure by Letters Batent, isk v i 1. Adetachable shelf consisting. of a horizontal rectangular frame, B, to rest on the Slide rests or supports of a baking-oven, counterbalanced shutters D, pivoted within the frame at their ends, and'a sliding bar placed edgewise under said shutters, extending through the ends of. the frame to form a handie or finger-piece, and having a series .of recesses, e,,in its upper surface, into which'the counterbalanced sides of the shutters extend when open, and intermediate walls orprojections, one for each shutter and contacting with thelower, faces thereof, substantially as a set forth. a 7

2. In an oven-shelf and heat-regulatonthe; combination, with a frame, B, consisting of the angular side pieces, A, end pieces, A, central dividing-bar, B, and aseries of 'shutters 9 f pivoted in said ends and dividing bar, of sliding' bars E, extending transverselybeneath said shutters through the sides of the frame to form the operating finger-pieces' or han-' dles, and provided in their upper edges with too i a series of recesses, 6, having a concaved wall, 6 and an opposing convex wall, 6 one for each shelf, all arranged to operatesubstantially as herein shown and described.

OSOAR'F. FROST}.

Witnesses: Enwm A. DUDLEY, SIMON OLoUeH. 

